James Blish's 1971 Star Trek 4 contains 6 stories adapted by Blish from the screenplays of the 1960s television series.
Credits for the original screenplays are as follows:
"All Our Yesterdays" by Jean Lisette Aroeste,
"The Devil in the Dark" by Gene L. Coon,
"Journey to Babel" by D.C. Fontana,
"The Menagerie" by Gene Roddenberry,
"The Enterprise Incident" by D.C. Fontana, and
"A Piece of the Action" by David P. Harmon and Gene l. Coon.
As with my reviews of the previous books in the series, about these stories themselves I feel I need say nothing beyond the briefest nod to each: Kirk and Spock and McCoy get stuck in the past timelines of a planet whose star is about to go nova, a big acid-drizzling monster has started killing miners in the deep corridors of a lonely colony, quarrelsome ambassadors--including Spock's parents--must be ferried to a crucial interstellar conference, the original pilot episode has Captain Pike caught in a sinister world of illusions, Kirk appears to have gone insane as he purposefully violates the Romulan Neutral Zone and finds the Enterprise surrounded without escape, and Kirk and Spock end up in the shenanigans of an alien world living like the gangster era of 1920s Chicago. After all, anyone choosing the book is already familiar with the episodes of the TV show, right?
As usual, differences pop up here and there between what we are familiar with and the adaptations Blish gives us. Some arise from the various artistic choices needed in adaptation, others from the fact that the scripts given to Blish were not always the most finalized versions. The more familiar the individual reader is with a particular broadcast episode, the more noticeable and potentially interesting such divergences will be.
In "The Menagerie," for example, as Blish works from that original story rather than the more-familiar two-episode story that uses the narrative frame of Spock's current court martial to show the past, he "adapts only the main story, incidentally restoring it to the ending it had--never shown on television" (1974 Bantam paperback, page 69). And speaking of endings, the cheesy yet somewhat irresistible "A Piece of the Action" happens to lack the final twist of McCoy losing his communicator and thus leading the imitative Iotians onto a very different track. Surely there are others I didn't happen to have noticed.
In any event, James Blish's Star Trek 4 is not deeply probing or given to evocative or artistic turns of phrase, nor probably is it intended for an audience that has never heard of the starship Enterprise and its historic 5-year mission, but its adventures are swiftly moving and entertaining, and founded upon courage and friendship and the dignity of the individual, and for fans of the television series will be a pleasantly familiar 5-star read.